What is the radian measure of 270 degrees?

To go from to degree measure you perform the following conversion:
##(pi(radians))/180^o*(degrees)=radians##
To go from degree measure to radian measure you perform the following conversion:
##180^o/(pi(radians))*(radians)=degrees##
So we are given ##270^o## and we want to convert it into radian measure. So we perform the following conversion:
##(pi(radians))/180^o*(degrees)=radians##
##(pi(radians))/180^o*(270^o)=((270pi)/180radians)=(3pi)/2radians##
So our answer is: ##(3pi)/2##